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Overview of surface ozone variability in East Asia-North Pacific region during IGAC/APARE(1994—1996)

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j.urnal of Environmental Sciences 2004年第4期16卷 599-609页

作者： K.S. Lam T.j.Wang T. Wang j. tang . Y.Kaj.i C.M. Liu S.G. Shim Environmental Engineering Unit Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hong Kong Department of Atmospheric Science Nanjing University Nanjing 210093 China Chinese Academy of Meteorological Science Beijing 100081 China Research Center for Advanced Science and Technology University of Tokyo Tokyo Japan Department of Atmospheric Science "National" Taiwan University Taipei Taiwan China Global Environmental Research Center Korea Institute of Science and Technology Seoul South Korea

Surface ozone(O\-3) was measured at Oki Island(j.pan), Chej. Island(South Korea), Lanyu Island(Taiwan Province, China), Cape D'Aguilar(Hong Kong SAR) and Lin'an, Longfenshan, Waliguan(China mainland) during j.nuary 1994—December 1996 as a component of IGAC/APARE(International Global Atmospheric Chemistry/East Asia-North Pacific Regional Experiment). This paper gave a j.int discussion on the observational results at these stations over the study region. Investigations showed that the average of surface O 3 mixing ratios at the seven sites are 47.9±15.8, 48.1±17.9, 30.2±16.4, 31.6±17.5, 36.3±17.5, 34.8±11.5 and 48.2±9.5 ppbv, respectively. Significant diurnal variations of surface O 3 have been observed at Oki, Chej., D’Aguilar, Lin'an and Longfenshan. Their annual averaged diurnal differences range from 8 to 23 ppbv and differ in each season. Surface O 3 at Lanyu and Waliguan do not show strong diurnal variability. Seasonal cycles of surface O 3 showed difference at the temperate and the subtropical remote sites. Oki has a summer minimum-spring maximum, while Lanyu has a summer minimum-autumn maximum. The suburban sites at D'Aguilar and Lin'an report high-level O 3 in autumn and low level O 3 in summer. Surface O 3 remains high in autumn and low in winter at the rural site Longfenshan. For the global background station Waliguan, surface O 3 exhibits a broad spring-summer maximum and autumn-winter minimum. The backward air traj.ctories to these sites have shown different pathways of long-range transport of air pollution from East Asia Continent to North Pacific Ocean. Surface O 3 was found to be strongly and positively correlated with CO at Oki and Lanyu, especially in spring and autumn, reflecting the substantial photochemical buildup of O\-3 on a regional scale. It is believed that the regional sources of pollution in East Asia have enhanced the average surface O 3 concentrations in the background atmosphere of North Pacific.

关键词： surface ozone traj.ctory transport photochemistry

DYNAMIC RECOVERY AND DYNAMIC RECRYSTALLIZATION OF 7005 ALUMINIUM ALLOY DURING HOT COMPRESSION

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Acta Metallurgica Sinica(English Letters) 2000年第1期13卷 379-386页

作者： j. Shen S. S. Xie and j. H. tang (General Research Institute for Non - ferrous Metals,Beij.ng 100088, China)

Dynamic recovery and dynamic recrystallizatin behaviors of AA7005 aluminium alloy (Al - Zn - Mg) during hot compression are investigated by isothermal compression *** interdependence of flow stress,stress, strain rate,true strain and deformation temperature for the alloy is analyzed by introduc- ing Zener-Hollomon parameter. A steady - state flow of the 7005 alloy is confirmed to be a thermal- ly activated *** is governed by rate-controlling mechanisms of dislocations.A hyperbolic sine relationship can satisfactorily correlate temperature, strain rate with flow stress through an Arrhe- nius term that involves thermal activation parameters. The dynamic recovery mechanisms of the alloy are ***- slip of j.gged screw dislocations is the main dynamic recovery mechanism over the deformation temperatures and strain *** are highly developed in the originally elongat- ed *** size of the subgrain increases with decrease of the natural logarithm of Zener- Hol - lomon *** dynamic recrystallization is operative when the alloy is deformed at temperature of 500℃ and strain rate of 0. 001s - 1.

关键词： compression flow stress dynamic recovery dynamic recrystallization restoration mechanism

A Review on the Identification Indicators of Tea Germplasm

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j.urnal of Agricultural Science and Technology(B) 2011年第1期1卷 1-7页

作者： j. M. tang Y. S. Li Q tang College of Horticulture Sichuan Agricultural University Ya ＇an 625014 Sichuan China

Tea plant is cross pollinated plant, it forms a variety of the tea Germplasm constantly in the long-term breeding process. Tea Germplasm resources are the material foundation for improving varieties and also the basic research which is good for developing and expanding tea well-bred varieties in tea field, especially in quality selection and biotechnology research. Furthermore, excellent tea germplasm is primary condition for tea breeding and quality. Therefore, identification and screening excellent tea germplasm become particularly important. We need accelerate develop high-quality tea varieties, and it need to base on exploring and studying tea germplasm. This paper reviews the research progress of tea germplasm on identification from morphological characteristic, biological characteristic, quality characteristic, resistance and heredity. However, there are still some problems on identification and screening of tea germplasm, no effective methods have been found so far which apply on early identification and genetic engineering, so we should make intensive and long lasting study tea germplasm and analyze systematically various identification, which are benefit for breeding high-quality seeds, shortening the breeding period and summing the new way of breeding. We expect them to play the key roles and provide the theory basis for genetic improvement, classification and breeding in tea plant.

关键词： Tea germplasm resources identification indicators review.

高脱位髋关节假体重建中使用髋臼螺钉的安全区研究

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中华骨科杂志 2010年第6期30卷 I0017-I0021页

作者： Q. Liu Y.X. Zhou H.j. Xu j. tang S.j. Guo Q.H. tang 刘庆(译) 周一新(译) Investigation performed at the Department of Orthopaedic Surgery Beijing Jishuitan Hospital Fourth Clinical College of Peking University Beijing China 北京积水潭医院矫形骨科 100035

背景：高脱位髋关节（CroweIV型）的人工关节重建是技术要求较高的手术，由于缺乏足够的骨性覆盖和骨质较差，所以经常需要使用髋臼螺钉加强固定。我们希望验证传统的象限理论对该种特殊病例的有效性，并确定其使用螺钉固定的安全区，... 详细信息

背景：高脱位髋关节（CroweIV型）的人工关节重建是技术要求较高的手术，由于缺乏足够的骨性覆盖和骨质较差，所以经常需要使用髋臼螺钉加强固定。我们希望验证传统的象限理论对该种特殊病例的有效性，并确定其使用螺钉固定的安全区，以避免损伤血管。方法：获取12例18髋高脱位髋关节病例的骨盆CT血管造影（CTA）容积数据，使用三维图像处理软件重建骨和血管结构。在工作站中，我们在真臼水平模拟手术并固定髋臼螺钉。我们将臼杯分割为数个区域，并测量每个区内的螺钉与血管的距离。结果：高脱位髋关节重建后的关节旋转中心较普通病例偏下、偏前。因此，固定螺钉时仍使用象限理论的安全区容易损伤闭孔血管。然后，我们为高脱位髋关节使用髋臼螺钉重新划定安全区。结论：象限理论确定的安全区适用于解剖位置正常的病例；但在置换高脱位髋关节时，可能会误导使用髋臼螺钉。我们认为应该按照新的螺钉安全区来处理这部分特殊病例。

关键词：人工关节重建髋关节假体螺钉固定安全区脱位髋臼普通病例损伤血管

Thermoelectric Performance of Micro/Nano-Structured Bismuth-Antimony-Telluride Bulk from Low Cost Mechanical Alloying

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Materials Sciences and Applications 2012年第12期3卷 833-837页

作者： Z. Li G. L. Zhao P. Zhang S. Guo j. tang Department of Mechanical Engineering Louisiana State University Baton Rouge USA Department of Physics and Astronomy University of Wyoming Laramie USA Department of Physics Southern University and A & M College Baton Rouge USA

In this work, micro/nano-structured Bi0.5Sb1.5Te3bulk thermoelectric materials were synthesized by mechanical alloying from elemental shots of Bi, Sb, and Te. Cold pressing and subsequent heat treatments with hydrogen reduction were used to form bulk solid samples with good thermoelectric properties in the temperature range around 75℃to 100℃. In comparison to crystal growth methods and chemical solution synthesis, the reported technique can be readily implemented for mass production with relatively low cost.

关键词： Thermoelectric Bi0.5Sb1.5Te3 Mechanical Alloying Hydrogen Reduction

Aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders:progress of experimental models based on disease pathogenesis

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Neural Regeneration Research 2025年第2期20卷 354-365页

作者： Li Xu Huiming Xu Changyong tang Department of Neurology The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Neuromyelitis optica spectrum disorders are neuroinflammatory demyelinating disorders that lead to permanent visual loss and motor *** date,no effective treatment exists as the exact causative mechanism remains ***,experimental models of neuromyelitis optica spectrum disorders are essential for exploring its pathogenesis and in screening for therapeutic *** most patients with neuromyelitis optica spectrum disorders are seropositive for IgG autoantibodies against aquaporin-4,which is highly expressed on the membrane of astrocyte endfeet,most current experimental models are based on aquaporin-4-IgG that initially targets *** experimental models have successfully simulated many pathological features of neuromyelitis optica spectrum disorders,such as aquaporin-4 loss,astrocytopathy,granulocyte and macrophage infiltration,complement activation,demyelination,and neuronal loss;however,they do not fully capture the pathological process of human neuromyelitis optica spectrum *** this review,we summarize the currently known pathogenic mechanisms and the development of associated experimental models in vitro,ex vivo,and in vivo for neuromyelitis optica spectrum disorders,suggest potential pathogenic mechanisms for further investigation,and provide guidance on experimental model *** addition,this review summarizes the latest information on pathologies and therapies for neuromyelitis optica spectrum disorders based on experimental models of aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders,offering further therapeutic targets and a theoretical basis for clinical trials.

关键词： aquaporin-4 experimental model neuromyelitis optica spectrum disorder pathogenesis

The Modulation Effect of Triglyceride Type and Phospholipids Type ω-3 LCPUFA on Mice Gut Microbiota

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j.urnal of Biosciences and Medicines 2017年第9期5卷 54-64页

作者： X. Wang F. Liu Y. M. Wang C. H. Xue Q. j. tang College of Food Science and Engineering Ocean University of China Qingdao China

The evaluation from prospective cohort studies on the dietary ω-3 long-chain polyunsaturated fatty acid (LCPUFA) supplementation and nutritional value is consistent. However, the effect of different types of ω-3 long-chain PUFA (ω-3 LCPUFA) on microbiota in intestine is inconsistent. In this study, the mice were divided into three groups (N, PL, FO), with AIN-93M (N), AIN-93M + Phospholipids type ω-3 LCPUFA (PL) and AIN-93M + triglyceride type ω-3 LCPUFA (FO), respectively. Denaturing Gradient Gel Electrophoresis (DGGE) was used to detect the structure of intestinal microbiota. The data showed that the composition of gut microbiota was changed by treating with the two types of ω-3 LCPUFA. The results revealed that gut microbiota’ enrichment in FO group was decreased while in PL group was increased. The data also showed that the histological morphology of the small intestine in treated mice was improved especially in group PL, which was much more significant and suggested that Phospholipids type ω-3 LCPUFA is beneficial to intestinal health.

关键词： Phospholipids Type ω-3 LCPUFA Triglyceride Type ω-3 LCPUFA Gut Microbiota

Boosting high-performance in Zr-rich side protonic solid oxide electrolysis cells by optimizing functional interlayer

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Green Energy & Environment 2025年第1期10卷 150-160页

作者： Chunmei tang Ning Wang Sho Kitano Hiroki Habazaki Yoshitaka Aoki Siyu Ye Huangpu Hydrogen Energy Innovation Center School of Chemistry and Chemical EngineeringGuangzhou UniversityNo.230 Wai Huan Xi RoadGuangzhou510006China Graduate School of Chemical Sciences and Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan Faculty of Engineering Hokkaido UniversityN13W8Kita-kuSapporo060-8628Japan

Protonic solid oxide electrolysis cells(P-SOECs)are a promising technology for water electrolysis to produce green ***,there are still challenges related key materials and anode/electrolyte interface.P-SOECs with Zr-rich electrolyte,called Zr-rich side P-SOECs,possess high thermodynamically stability under high steam concentrations but the large reaction resistances and the current leakage,thus the inferior *** this study,an efficient functional interlayer Ba_(0.95)La_(0.05)Fe_(0.8)Zn_(0.2)O_(3-δ)(BLFZ)in-between the anode and the electrolyte is *** electrochemical performances of P-SOECs are greatly enhanced because the BLFZ can greatly increase the interface contact,boost anode reaction kinetics,and increase proton inj.ction into *** a result,the P-SOEC yields high current density of 0.83 A cm^(-2) at 600℃ in 1.3 Vamong all the reported Zr-rich side *** work not only offers an efficient functional interlayer for P-SOECs but also holds the potential to achieve P-SOECs with high performances and long-term stability.

关键词： Functional interlayer Zr-rich side electrolyte Protonic solid oxide electrolysis cells Current density Faradaic efficiency

Synergistic effect of bonding heterogeneity and phonon localization in introducing excellent thermoelectric properties in layered heteroanionic NdZnSbO material

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j.urnal of Energy Chemistry 2025年第1期100卷 259-272页

作者： Da Wan Shuwei tang Shulin Bai Xiaodong Li Peng Ai Wanrong Guo Tuo Zheng College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

Layered rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional layered materials, exhibit remarkable thermal stability and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlayer van der Waals interactions, robust intralayer ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity, which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity in the layered NdZnSbO compound. The weakening bond and heavy element contribute to the softness of phonon modes, which significantly diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by adopting the Heyd-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley feature of NdZnSbO compound augur favorably for band degeneracy, thus amplifying the power factor. Consequently, an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-type NdZnSbO compound. The present study delves deeply insights into the origins for the low thermal conductivity of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)